//
//  Readability+Async.swift
//  ReadabilityKit
//
//  Copyright (c) 2016 Exyte http://www.exyte.com
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in
//  all copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//  THE SOFTWARE.
//

public extension Readability {
    class func parse(data htmlData: Data, completion: @escaping (ReadabilityData?) -> ()) {
		let isMainThread = Thread.isMainThread
        
        DispatchQueue.global(qos: .default).async {
			let parsedData = Readability.parse(htmlData)
			if isMainThread {
				DispatchQueue.main.async(execute: {
					completion(parsedData)
				})
			} else {
				completion(parsedData)
			}
		}
	}
}
